Gregory has now brought in two of his own men. Richard Hill joins John Gregory's backroom staff as a coach, while Joe Dunbar is employed as a Sports Performance Manager.
"Joe was Lennox Lewis' personal trainer," Gregory told www.qpr.co.uk.
"When Lennox was getting ready for a fight, he had a ten week period where Joe was the guy who had to get him up to speed.
"Since Lennox has retired, Joe has had a bit more time on his hands and has been working for me here at the Club on a semi-part-time basis.
"Hilly worked with me at Wycombe between 1996 and 1998. When I went to Aston Villa he went to Gillingham, so he knows this division very well and knows how to survive in it. He will be working alongside me.''